Trend OHLC

Trend_OHLC.efs  
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File Name: Trend_OHLC.efs

Description:
Trend OHLC

Formula Parameters:

• MA Length : 60
• Moving Average : SMA

Notes:

Download File:
Trend_OHLC.efs


EFS Code:

/*********************************
Provided By:  
    eSignal (Copyright c eSignal), a division of Interactive Data 
    Corporation. 2009. All rights reserved. This sample eSignal 
    Formula Script (EFS) is for educational purposes only and may be 
    modified and saved under a new file name.  eSignal is not responsible
    for the functionality once modified.  eSignal reserves the right 
    to modify and overwrite this EFS file with each new release.

Description:        
    Trend OHLC
    
Version:            1.0  07/19/2009
 
Formula Parameters:                     Default:
    MA Length                           60
    Moving Average                      SMA
    
Notes:
    
**********************************/
var fpArray = new Array();
var bInit = false;

function preMain(){
    setPriceStudy(true);
    setShowCursorLabel(true);
    setShowTitleParameters(false);
    setStudyTitle("Trend OHLC");
    setCursorLabelName("Mode 0", 0);
    setDefaultBarFgColor(Color.red, 0);
    setPlotType(PLOTTYPE_SQUAREWAVE, 0);
    setDefaultBarThickness(1, 0);
    setCursorLabelName("Mode 1", 1);
    setDefaultBarFgColor(Color.blue, 1);
    setPlotType(PLOTTYPE_SQUAREWAVE, 1);
    setDefaultBarThickness(1, 1);
    setCursorLabelName("Mode 2", 2);
    setDefaultBarFgColor(Color.red, 2);
    setPlotType(PLOTTYPE_SQUAREWAVE, 2);
    setDefaultBarThickness(2, 2);
    setCursorLabelName("Mode 3", 3);
    setDefaultBarFgColor(Color.blue, 3);
    setPlotType(PLOTTYPE_SQUAREWAVE, 3);
    setDefaultBarThickness(2, 3);
    var x = 0;
    fpArray[x] = new FunctionParameter("MALength", FunctionParameter.NUMBER);
    with(fpArray[x++]) {
        setName("MA Length");
        setLowerLimit(1);
        setDefault(60);
    }    
    fpArray[x] = new FunctionParameter("MAType", FunctionParameter.STRING);
	with(fpArray[x++]){
        setName("Moving Average");
        addOption("sma");
        addOption("ema");
        addOption("wma");
        addOption("vwma");
        setDefault("sma");
    }    
}

var xTrend_H = null;
var xTrend_L = null;
var xTrend_O = null;
var xTrend_C = null;

function main(MALength, MAType) {
var nBarState = getBarState();
var nTH = 0;
var nTL = 0;
var nTO = 0;
var nTC = 0;
    if (nBarState == BARSTATE_ALLBARS) {
        if(MAType == null) MAType = "sma";
        if(MALength == null) MALength = 60;
	}
	if (bInit == false) {
        xTrend_L = efsInternal("Calc_TrendOHLC", MALength, MAType);
        xTrend_H = getSeries(xTrend_L, 1);
        xTrend_O = getSeries(xTrend_L, 2);
        xTrend_C = getSeries(xTrend_L, 3);
        bInit = true;
	}
	nTO = xTrend_O.getValue(0);
	nTH = xTrend_H.getValue(0);
	nTL = xTrend_L.getValue(0);
	nTC = xTrend_C.getValue(0);
	if (nTO == null || nTH == null || nTL == null || nTC == null) return;
    if (nTL < nTH) {
        setBarBgColor(Color.lightgrey,0,nTL,nTH)
    } else {
        setBarBgColor(Color.grey,0,nTL,nTH)    
    }    
    if (nTO < nTC) {
        setBarBgColor(Color.lime,1,nTO,nTC)
    } else {
        setBarBgColor(Color.red,1,nTO,nTC)    
    }
    return new Array(nTL, nTH, nTO, nTC);
}

var bSecondInit = false;
var xmaOpen = null;
var xmaClose = null;
var xmaLow = null;
var xmaHigh = null;
var haOpen1 = 0;
var haOpen = 0;

function Calc_TrendOHLC(MALength, MAType) {
var nBarState = getBarState();
var nmaOpen = 0;
var nmaClose = 0;
var nmaLow = 0;
var nmaHigh = 0;
var nmaOpen1 = 0;
var nmaClose1 = 0;
var nmaLow1 = 0;
var nmaHigh1 = 0;
var haHigh = 0;
var haLow = 0;
var haClose = 0;
var haClose = 0;
var nResLow = 0;
var nResHigh = 0;
    if (bSecondInit == false) {
        xmaOpen = efsInternal("CalcMA", MALength, MAType, "open");
        xmaClose =  efsInternal("CalcMA", MALength, MAType, "close");
        xmaLow =  efsInternal("CalcMA", MALength, MAType, "low");
        xmaHigh =  efsInternal("CalcMA", MALength, MAType, "high");
        haOpen = open(0);
        haOpen1 = haOpen;
        bSecondInit =  true;
    }
    nmaOpen = xmaOpen.getValue(0);
    nmaClose= xmaClose.getValue(0);
    nmaLow  = xmaLow.getValue(0);
    nmaHigh = xmaHigh.getValue(0);
    nmaOpen1 = xmaOpen.getValue(-1);
    nmaClose1= xmaClose.getValue(-1);
    nmaLow1  = xmaLow.getValue(-1);
    nmaHigh1 = xmaHigh.getValue(-1);
    if (nmaOpen1 == null || nmaHigh1  == null || nmaLow1  == null || nmaClose1 == null) return;
    if (nBarState == BARSTATE_NEWBAR) {
        haOpen1 = haOpen;
    }
    haClose = (nmaOpen + nmaHigh + nmaLow + nmaClose) /4;
    haOpen =  (haOpen1 + (nmaOpen1 + nmaHigh1 + nmaLow1 + nmaClose1) / 4) / 2;
    haHigh = Math.max(nmaHigh, Math.max(haOpen, haClose));
    haLow = Math.min(nmaLow, Math.min(haOpen, haClose));
    if (haOpen < haClose) {
        nResLow = haLow;
        nResHigh = haHigh;
    } else {
        nResLow = haHigh;
        nResHigh = haLow;
    }
    return new Array(nResLow, nResHigh, haOpen, haClose);
}

var bThirdInit = false;
var xTMPMA1 = null;
var xTMPMA2 = null;

function CalcMA(MALength, MAType, Source) {
var nRes = 0;
var nTMPMA1 = 0;
var nTMPMA2 = 0;
    if (bThirdInit == false) {
        xTMPMA1 = eval(MAType)(Math.round(MALength/2), eval(Source)());
        xTMPMA2 = eval(MAType)(MALength, eval(Source)());        
        bThirdInit = true;
    }
    nTMPMA1 = xTMPMA1.getValue(0);
    nTMPMA2 = xTMPMA2.getValue(0);
    if (nTMPMA1 == null || nTMPMA2 == null) return;
    nRes = nTMPMA1 * 2 - nTMPMA2;
    return nRes;
}